/**
 * jQuery.query - Query String Modification and Creation for jQuery
 * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
 * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
 * Date: 2009/8/13
 *
 * @author Blair Mitchelmore
 * @version 2.1.7
 *
 **/
new function (settings) {
	// Various Settings
	var $separator = settings.separator || '&';
	var $spaces = settings.spaces === false ? false : true;
	var $suffix = settings.suffix === false ? '' : '[]';
	var $prefix = settings.prefix === false ? false : true;
	var $hash = $prefix ? settings.hash === true ? "#" : "?" : "";
	var $numbers = settings.numbers === false ? false : true;

	jQuery.query = new function () {
		var is = function (o, t) {
			return o != undefined && o !== null && (!!t ? o.constructor == t : true);
		};
		var parse = function (path) {
			var m, rx = /\[([^[]*)\]/g, match = /^([^[]+)(\[.*\])?$/.exec(path), base = match[1], tokens = [];
			while (m = rx.exec(match[2])) tokens.push(m[1]);
			return [base, tokens];
		};
		var set = function (target, tokens, value) {
			var o, token = tokens.shift();
			if (typeof target != 'object') target = null;
			if (token === "") {
				if (!target) target = [];
				if (is(target, Array)) {
					target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value));
				} else if (is(target, Object)) {
					var i = 0;
					while (target[i++] != null);
					target[--i] = tokens.length == 0 ? value : set(target[i], tokens.slice(0), value);
				} else {
					target = [];
					target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value));
				}
			} else if (token && token.match(/^\s*[0-9]+\s*$/)) {
				var index = parseInt(token, 10);
				if (!target) target = [];
				target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value);
			} else if (token) {
				var index = token.replace(/^\s*|\s*$/g, "");
				if (!target) target = {};
				if (is(target, Array)) {
					var temp = {};
					for (var i = 0; i < target.length; ++i) {
						temp[i] = target[i];
					}
					target = temp;
				}
				target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value);
			} else {
				return value;
			}
			return target;
		};

		var queryObject = function (a) {
			var self = this;
			self.keys = {};

			if (a.queryObject) {
				jQuery.each(a.get(), function (key, val) {
					self.SET(key, val);
				});
			} else {
				jQuery.each(arguments, function () {
					var q = "" + this;
					q = q.replace(/^[?#]/, ''); // remove any leading ? || #
					q = q.replace(/[;&]$/, ''); // remove any trailing & || ;
					if ($spaces) q = q.replace(/[+]/g, ' '); // replace +'s with spaces

					jQuery.each(q.split(/[&;]/), function () {
						var key = decodeURIComponent(this.split('=')[0] || "");
						var val = decodeURIComponent(this.split('=')[1] || "");

						if (!key) return;

						if ($numbers) {
							if (/^[+-]?[0-9]+\.[0-9]*$/.test(val)) // simple float regex
								val = parseFloat(val);
							else if (/^[+-]?[0-9]+$/.test(val)) // simple int regex
								val = parseInt(val, 10);
						}

						val = (!val && val !== 0) ? true : val;

						if (val !== false && val !== true && typeof val != 'number')
							val = val;

						self.SET(key, val);
					});
				});
			}
			return self;
		};

		queryObject.prototype = {
			queryObject: true,
			has: function (key, type) {
				var value = this.get(key);
				return is(value, type);
			},
			GET: function (key) {
				if (!is(key)) return this.keys;
				var parsed = parse(key), base = parsed[0], tokens = parsed[1];
				var target = this.keys[base];
				while (target != null && tokens.length != 0) {
					target = target[tokens.shift()];
				}
				return typeof target == 'number' ? target : target || "";
			},
			get: function (key) {
				var target = this.GET(key);
				if (is(target, Object))
					return jQuery.extend(true, {}, target);
				else if (is(target, Array))
					return target.slice(0);
				return target;
			},
			SET: function (key, val) {
				var value = !is(val) ? null : val;
				var parsed = parse(key), base = parsed[0], tokens = parsed[1];
				var target = this.keys[base];
				this.keys[base] = set(target, tokens.slice(0), value);
				return this;
			},
			set: function (key, val) {
				return this.copy().SET(key, val);
			},
			REMOVE: function (key) {
				return this.SET(key, null).COMPACT();
			},
			remove: function (key) {
				return this.copy().REMOVE(key);
			},
			EMPTY: function () {
				var self = this;
				jQuery.each(self.keys, function (key, value) {
					delete self.keys[key];
				});
				return self;
			},
			load: function (url) {
				var hash = url.replace(/^.*?[#](.+?)(?:\?.+)?$/, "$1");
				var search = url.replace(/^.*?[?](.+?)(?:#.+)?$/, "$1");
				return new queryObject(url.length == search.length ? '' : search, url.length == hash.length ? '' : hash);
			},
			empty: function () {
				return this.copy().EMPTY();
			},
			copy: function () {
				return new queryObject(this);
			},
			COMPACT: function () {
				function build(orig) {
					var obj = typeof orig == "object" ? is(orig, Array) ? [] : {} : orig;
					if (typeof orig == 'object') {
						function add(o, key, value) {
							if (is(o, Array))
								o.push(value);
							else
								o[key] = value;
						}
						jQuery.each(orig, function (key, value) {
							if (!is(value)) return true;
							add(obj, key, build(value));
						});
					}
					return obj;
				}
				this.keys = build(this.keys);
				return this;
			},
			compact: function () {
				return this.copy().COMPACT();
			},
			toString: function () {
				var i = 0, queryString = [], chunks = [], self = this;
				var encode = function (str) {
					str = str + "";
					if ($spaces) str = str.replace(/ /g, "+");
					return encodeURIComponent(str);
				};
				var addFields = function (arr, key, value) {
					if (!is(value) || value === false) return;
					var o = [encode(key)];
					if (value !== true) {
						o.push("=");
						o.push(encode(value));
					}
					arr.push(o.join(""));
				};
				var build = function (obj, base) {
					var newKey = function (key) {
						return !base || base == "" ? [key].join("") : [base, "[", key, "]"].join("");
					};
					jQuery.each(obj, function (key, value) {
						if (typeof value == 'object')
							build(value, newKey(key));
						else
							addFields(chunks, newKey(key), value);
					});
				};

				build(this.keys);

				if (chunks.length > 0) queryString.push($hash);
				queryString.push(chunks.join($separator));

				return queryString.join("");
			}
		};

		return new queryObject(location.search, location.hash);
	};
}(jQuery.query || {}); // Pass in jQuery.query as settings object
